Dedicated SIB TRS Configuration for RRC Power Saving

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Solution Overview

Problem

Existing wireless communication systems face challenges in optimizing power consumption, particularly in RRC_IDLE and RRC_INACTIVE states, due to limitations in tracking reference signal configurations, which affect UE synchronization and power efficiency.

Innovation Solution

Introduce a new system information block (SIB) that provides enhanced tracking reference signal (TRS) configurations with extended periodicities and offsets, allowing UEs to maintain synchronization while minimizing power consumption, separate from existing SIB17 configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If existing TRS configurations in SIB17 are used, then UEs can maintain synchronization, but power consumption is not optimized in RRC_IDLE and RRC_INACTIVE states

Engineering Contradiction:

Improvepower consumptionVSAvoidsynchronization

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent introduces a new SIB (System Information Block) that carries enhanced TRS configuration parameters, including extended periodicity values and offset information. By changing the configuration parameters from existing SIB17 to a new dedicated SIB, the system enables UEs to maintain synchronization with extended periodicities while operating in power-saving modes during RRC_IDLE and RRC_INACTIVE states, thus optimizing power consumption without sacrificing synchronization reliability

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If UEs frequently monitor for synchronization, then synchronization accuracy is maintained, but power consumption increases

Engineering Contradiction:

Improvesynchronization accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic monitoring of TRS signals with extended periodicities configured through the new SIB. Instead of requiring UEs to monitor continuously or at short intervals, the system configures longer periodic monitoring intervals that are sufficient to maintain synchronization accuracy while significantly reducing the frequency of monitoring operations, thereby lowering power consumption in idle and inactive states

Inventive Principle:

Principle #19Periodic action

3Use of energy by moving object

If separate SIB for TRS configuration is introduced, then power saving is optimized, but system information complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidsystem information structure

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent segments the system information by introducing a dedicated new SIB specifically for TRS configuration, separate from the existing SIB17. This segmentation allows the TRS configuration parameters to be independently optimized and broadcast, enabling UEs to efficiently acquire only the necessary synchronization information without processing unrelated system information, thus achieving power savings despite the increased number of SIB structures

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12439339B1Method and apparatus for power saving using tracking reference signal configuration

Publication Date: 2025.10.07 MENTATS CO LTD

AI summary

Provided are a method and apparatus for power saving using tracking reference signal configuration in a wireless communication system. A terminal may receive a first system information block (SIB) including a first tracking reference signal (TRS) configuration. Further, the terminal may use the received first TRS configuration for power saving in at least one radio resource control (RRC) state. The first SIB including the first TRS configuration may be separate from a second SIB including a second TRS configuration.